Full-medium flexible miniature wear-resistant lead-in optic cable and manufacturing method thereof

Abstract

The invention discloses a full-medium flexible miniature wear-resistant lead-in optic cable and a manufacturing method thereof. The full-medium flexible miniature wear-resistant lead-in optic cable comprises a sheath, wherein a reinforced layer is arranged in the sheath, a plurality of loose tubes and a central reinforcing part arranged in the central position of each loose tube are coated by the reinforced layer, an optic fiber is arranged in each loose tube, and water resistant compound is arranged between each optic fiber and the corresponding loose tube. The manufacturing method comprises the following steps: (1) the loose tubes are twisted around the central reinforcing parts; (2) one reinforced layer is coated on the periphery of the loose tubes; (3) one layer of sheath is formed on the periphery of the reinforced layer through extrusion. According to the full-medium flexible miniature wear-resistant lead-in optic cable and the manufacturing method thereof, the method is simple, the structure is simple, the application is convenient, the construction cycle and construction cost are greatly reduced, and the water-proof function is realized.

Description

technical field [0001] The invention relates to an optical cable and a manufacturing method thereof, in particular to an all-dielectric flexible miniature wear-resistant lead-in optical cable and a manufacturing method thereof. Background technique [0002] At present, the main structure of the non-self-supporting overhead drop-in cable is to insert the single-mode or multi-mode optical fiber into the loose tube made of high modulus plastic and filled with waterproof compound, a metal reinforcement in the center of the cable core, loose tube and filler The rope is twisted around the central strength member to form a compact and round cable core. The inner gap of the cable core is filled with water-blocking compound, the outer aluminum tape is longitudinally wrapped, and then extruded to a layer of polyethylene sheath. With the rapid development of FTTX, data services are growing exponentially, and multimedia such as voice, 4G data and images need to be transmitted. Therefore...

AI Technical Summary

Problems solved by technology

Outdoor cables are required to have high mechanical properties, such as tensile and compressive resistance, etc., and also have high requirements for waterproof performance, but their softness is poor, and the requirements for flame retardancy and smoke reduction are not too high, so it is not recommended suitable for indoor use

However, indoor applications require high flame retardancy while pursuing flexibility. However, indoor cables generally have poor mechanical properties and do not consider water resistance, so they are not suitable for outdoor deployment.

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